Patent US4375078A successfully refreshed from Google Patents.
Patent US2620822A successfully refreshed from Google Patents.
US2620822A
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US
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Lock valve for fuel tanks
Assignee: Individual
•
Filing: 1947-12-13
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Granted: 1952-12-09
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Expires: 1967-12-13
Abstract
No abstract record available.
Inventors
- 👤 Russel A Peterson
- 👤 Lewis J Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:45
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/05; F; F16; F16K; F16K35/00; F16K35/06; E; E05; E05B; E05B47/00; E05B47/02; E05B53/00; E05B53/003; E05B53/005; Y; Y10; Y10T; Y10T137/00; Y10T137/7069; Y10T137/8158; Y10T137/8225; Y10T137/8242; Y10T137/8593; Y10T137/86292; Y10T137/86324; Y10T137/86332
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |